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我嘗試使用下面的代碼來讀取從MySQL數據庫中的數據:使用MySQL SRC在quantmod
drv<-dbDriver("MySQL")
user<-'xxxx'
password<-'xxxx'
dbname<-'test'
con<-dbConnect(drv, user=user, password=password, dbname=dbname)
load.packages('quantmod')
tickers = 'Z (Dec 10)'
setDefaults(getSymbols,verbose=T,src='MySQL')
data <- new.env()
data = getSymbols(tickers, from = '2010-09-01', env = data, auto.assign = T)
產生以下錯誤:
> data = getSymbols(tickers, from = '2010-09-01', env = data, auto.assign = T)
Error in getSymbols.MySQL(Symbols = "Z (Dec 10)", env = <environment>, :
At least one connection argument (‘user’ ‘password’ ‘dbname’) is not set
我不明白爲什麼當我已經安裝了con,它不工作。
我會想象在setDefaults中的參數應該讀取(...,src = con),但我不是這個包的普通用戶。 –
我建議使用quantmod的方式連接到MySQL http://www.quantmod.com/documentation/getSymbols.MySQL.html,雖然我從來沒有嘗試過 – JordanBelf